sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.2 not setting count and/or reply_len properly
random: crng reseeded on system resumption
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7649 at lib/iov_iter.c:629 _copy_from_iter+0x2f1/0x1130
Modules linked in:
CPU: 0 PID: 7649 Comm: syz-executor.2 Not tainted 6.1.0-rc7-next-20221130 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2f1/0x1130
Code: 37 ff 44 89 f3 e9 2f ff ff ff e8 4a 2f 37 ff be 79 02 00 00 48 c7 c7 80 b9 9e 84 e8 29 97 5a ff e9 13 fe ff ff e8 2f 2f 37 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 20 2f 37 ff 31 ff 89 ee e8 e7 2a
RSP: 0018:ffff888044ecf5e8 EFLAGS: 00010216
RAX: 0000000000000ec6 RBX: 0000000000000000 RCX: ffffc900011f2000
RDX: 0000000000040000 RSI: ffffffff8211e9c1 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000390
R13: ffffea0001141e00 R14: 0000000000000390 R15: ffff888044ecf818
FS:  00007f1c0a7fa700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c0a7d9718 CR3: 000000002116e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 copy_page_from_iter+0xe3/0x180
 blk_rq_map_user_iov+0xb0c/0x1650
 blk_rq_map_user_io+0x1ee/0x220
 sg_common_write.constprop.0+0xd84/0x15e0
 sg_write.part.0+0x706/0xb20
 sg_write+0x88/0xe0
 vfs_write+0x358/0xe40
 ksys_write+0x12b/0x260
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f1c0d2a5b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1c0a7fa188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1c0d3b9020 RCX: 00007f1c0d2a5b19
RDX: 000000000000002b RSI: 0000000020000380 RDI: 0000000000000007
RBP: 00007f1c0d2fff6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd14ae5c6f R14: 00007f1c0a7fa300 R15: 0000000000022000
 </TASK>
irq event stamp: 1107
hardirqs last  enabled at (1119): [<ffffffff812e1068>] __up_console_sem+0x78/0x80
hardirqs last disabled at (1130): [<ffffffff812e104d>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (1092): [<ffffffff8118333b>] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (1085): [<ffffffff8118333b>] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.2 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.4 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.2 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.4 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.2 not setting count and/or reply_len properly
sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in;
   program syz-executor.4 not setting count and/or reply_len properly
semctl(GETNCNT/GETZCNT) is since 3.16 Single Unix Specification compliant.
The task syz-executor.4 (7787) triggered the difference, watch for misbehavior.
syz_tun: refused to change device tx_queue_len
9pnet_fd: Insufficient options for proto=fd
9pnet_fd: Insufficient options for proto=fd
netlink: 228 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 228 bytes leftover after parsing attributes in process `syz-executor.3'.
syz_tun: refused to change device tx_queue_len
device lo entered promiscuous mode
Bluetooth: hci0: unexpected event 0x31 length: 7 > 6
syz_tun: refused to change device tx_queue_len
device lo left promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
Bluetooth: hci0: unexpected event 0x31 length: 7 > 6
syz_tun: refused to change device tx_queue_len
device lo left promiscuous mode
device lo entered promiscuous mode
Bluetooth: hci0: unexpected event 0x31 length: 7 > 6
syz_tun: refused to change device tx_queue_len
Bluetooth: hci0: unexpected event 0x31 length: 7 > 6